Safety syringe needle

ABSTRACT

It is a kind of syringe needle. An external bushing on needle connects with a base, and a barrier structure on the base contacts with the needle, which is an extended bushing on base frame. At the front end of the bushing there is a truct part on which a needle is inserted. The external bushing is made of soft material. A trepan boring on the front end of the base is connected with the truct-admitting part. Moving the barrier structure away from the needle and pushing the base back, the trepan boring of the base covers outside of truct part of the needle. The base is fixed on the needle by the friction from between the wall of trepan boring and out side of truct part.

BACKGROUND OF THE INVENTION

[0001] 1. Field of the Invention

[0002] This invention is related to a type of syringe needle, especiallyrefers to a syringe needle that incorporates the needle cover with theneedle and is coverable of reducing risk.

[0003] 2. Description of the Prior Art

[0004] Please see FIG. 22, the typical syringe needle is attached to anextended cannula 12 on a base frame 11. In the front end of the cannulais a truct part 13, into which is a needle 14 inserted, and severalholding and support components 15 are designed on the side bulge of thetruct part. All the barrier components 15 extend to the side of cannula12. In addition, a truct-setting part is designed inside the syringeneedle. The truct-setting part may be put on the front end of the needlecylinder 50, and the tip of the needle 14 is covered with a needle cover60. The external wall surface of cover may appropriately hold theholding components 15. The needle cover 60 has to be taken off whenpreparing for drawing or injecting with typical syringe needle, and thenstab the needle 14 into patient's affected part and perform drawing orinjecting with needle cylinder 50. When finishing the motion the syringemay be discarded after put on the needle cover 60. However, the needlecover 60 of typical syringe needle is very easy to be lost, because ithas to be removed when performing drawing or injection. Therefore, theneedle 14 may lead to risk when the syringe is discarded with itexposed. On the other hand, the medical care personnel may be stabbed byneedle 14 and infected when they put on the cover careless after theinjection.

[0005] From this we see that a good many defects still exist in thetypical item above, which actually is not a perfect design and should beimproved urgently.

[0006] In view of the disadvantages derived from the typical syringeneedle above, the inventor of this project earnestly made improvementand innovation, eventually this syringe needle is successfully inventedthrough research with great concentration for years.

SUMMARY OF THE INVENTION

[0007] This invention is focus on providing a type of syringe needlethat integrating the syringe needle with needle cylinder cover.

[0008] One of the purposes of this invention is to provide a type ofsyringe needle, which avoids the potential risk due to losing of theneedle cylinder cover.

[0009] The elements of a syringe needle for realizing this inventionpurpose include:

[0010] A needle head, it is attached to an extended cannula on the base,and a truct part is designed on the front end of this cannula, intowhich is a syringe needle inserted;

[0011] An external bushing, it is set between the needle and base;

[0012] A base, on appropriate position of the base has an opening, whichruns through the base and hole of the trepan boring. A baffle is setinside the perforation. Additionally, on the backside of the base is aconnection module.

[0013] A barrier structure, it is set between the syringe needle andbase. A connection component is set in front end of this structureincorporating with the connection components of the base.

BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings disclose an illustrative embodiment of the presentinvention, which serves to exemplify the various advantages and objectshereof, and are as follows:

[0015]FIG. 1 Three-dimensional outline drawing of the syringe needle;

[0016]FIG. 2 Three-dimensional exploded view of the syringe needle;

[0017]FIG. 3 Usage mode schematic drawing of needle structure;

[0018]FIG. 4 Side cross-sectional view of the syringe needle;

[0019]FIG. 5 Side motion schematic drawing (1) of the syringe needle;

[0020]FIG. 6 Side motion schematic drawing (2) of the syringe needle;

[0021]FIG. 7 Side motion schematic drawing (3) of the syringe needle;

[0022]FIG. 8 Side motion schematic drawing (4) of the syringe needle;

[0023]FIG. 9 Side cross-sectional view of the first example of syringeneedle;

[0024]FIG. 10 Side motion schematic drawing of the first example ofsyringe needle;

[0025]FIG. 11 Three-dimensional view of the second example of syringeneedle;

[0026]FIG. 12 Three-dimensional outline drawing of the third example ofsyringe needle;

[0027]FIG. 13 Front motion schematic drawing (1) of the third example ofsyringe needle;

[0028]FIG. 14 Front motion schematic drawing (2) of the third example ofsyringe needle;

[0029]FIG. 15 Side cross-section view of the fourth example of syringeneedle;

[0030]FIG. 16 Three-dimensional outline drawing of fifth example ofsyringe needle;

[0031]FIG. 17 Three-dimensional outline drawing of sixth example ofsyringe needle;

[0032]FIG. 18 Three-dimensional exploded view of the sixth example ofsyringe needle;

[0033]FIG. 19 Three-dimensional exploded view of the seventh example ofsyringe needle;

[0034]FIG. 20 Three-dimensional exploded view of the eighth example ofthe needle structure of syringe;

[0035]FIG. 21 Three-dimensional exploded view of the ninth example ofthe needle structure of syringe; and

[0036]FIG. 22 Exploded view of the typical syringe needle.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

[0037] Please see FIGS. 1, 2, 3 and 4, this syringe needle in thisinvention includes:

[0038] A needle head 1, it is attached to a base 11 with an extendedcannula 12. In front end of the canuula has a truct part 13, into whichis inserted a needle 14. In addition, inside the needle head 1 has atruct-setting part 15, which connects to the internal conduit of needle14 at one end, and the other end after running through the back end ofthe base 11 connects to the needle cylinder 50 or to a humoral bag;

[0039] An external bushing 2, it is made from a kind of thin softmaterial and set between the needle head 1 and base 3;

[0040] A base 3, which forms a truct-admitting part 31 running throngthe back end of base 3 and opens a trepan boring 32 on the side of base3 connecting to the truct-admitting part 31. There is a hole 33, whichruns through the base 3 and trepan boring, and has a baffle 34 with anopening 341, located on an appropriate place. Besides, there is acomponent 35 on the side edge of back end of the base 3;

[0041] A barrier structure 4, which is set between the needle head 1 andbase 3 and covering the outer fringe of external bushing 2. In the frontof the structure exist a connection component 41 that incorporating withthe tie-in component 35 of base 3, and the back end of barrier structure4 cleans against the needle head 1 and base 11.

[0042] When using the invented syringe needle, first of all thetruct-setting part 15 should be put on the needle cylinder 50, pleasesee FIGS. 5,6,7,8,9 and 10. The barrier structure 4 of syringe needleshould be turned, taking the tie-in component as the axle center, toallow this barrier structure 4 not leans against the base 11 of needlehead 1. The next step is to push the base 3 along the direction of thebase 11 to put the trepan boring 32 of base 3 onto the outer edge 13 ofneedle head 1. Relying on the friction between the wall surfaces oftrepan boring 32 against the wall of truct part 13, the base 3 will befastened on the needle 1. When pushing the base 3 to the base 11, underthe pressure the external bushing 2 will be accommodated in thetruct-admitting part 31 of base 3. In the same time, you may stab theneedle 14 into the affected part of the patient for drawing orinjection. When the drawing or injection completed, pull out the needle14 and apply force on the bottom of the barrier structure 4. The base 3will be pushed in virtue of the force on the barrier structure, then thetrepan boring 32 of the base 3 will separate from the truct part 13 onthe needle head 1 to push the base 3 back its original position (ordirectly pull out the needle head 1 from the base 3). Taking the tie-incomponent 35 as the axle center, turn the barrier structure 4 back andallow its bottom leaning against the base 11 of needle 1. Pull up thebaffle 34 on the base 3 to allow the baffle shadowing trepan boring 32to prevent the injection needle 14 from running out of the trepan boring32. Now the syringe needle together with the cylinder could bediscarded. It is clear from the above mentioned, this invented syringeneedle integrates the typical syringe needle with the needle head cover,so as to avoid the potential risk due to needle 14 exposing if theneedle head cover lost when drawing and injecting. And avoiding the riskduring the medical care personnel's operation as well. In addition,several bulging buckles 111 could be set on the outer edge of base 11,and corresponding amount and position holes 311 are set on thetruct-admitting part 31. When push the base 3 to connect with needlehead 1 the lobes 111 and hole 311 will joggle one another, as thisresult it is hard for the needle to break away from base.

[0043] Please see the FIGS. 11, 12, 13 and 14, the hole 33 also may notbe opened at the side of base 3. But an elastic cell 6 in the front ofbase 3 connects a lid 36, which covers trepan boring 32 of base 3 andsubstitutes for baffle 34. Such barrier structure 4 also uses an elasticcell 6 to connect with base 3. In addition, baffle 34 also is placed inthe front of base 3 and is connected with base 3 at hinge point 342. Thetrepan boring 32 of base 3 is revealed by moving baffle 34 at hingepoint 342 where is the axis. Then needle 14 goes through trepan boring32.

[0044] Please see FIGS. 15 and 16, in the invention, a spring 5 isplaced in the inner edge or outer edge of external bushing 2 of thesyringe needle. When the base 3 is separated from needle head 1, thebase 3 will be resetted by spring 5. In addition, the syringe needleintegrates with syringe cylinder.

[0045] Please see FIGS. 17, 18 and 19, in the invention, externalbushing 2 and base 3 of the syringe needle will be replaced by an inneredge bushing 7, one or more central bushing 8 and an outer edge bushing9. The central bushing 8 is covered outside of inner edge bushing 7, andouter edge bushing 9 is covered outside of central bushing 8. The backof inner edge bushing 8 is connected with base frame 11, and at thefront outer edge there is a protuberance 10. But there is a protuberance10 at both front outer edge and back inner edge of central bushing 8. Inaddition, outer edge bushing 9 has a protuberance 10 at back inner edgeand a cover plate 91 at the front end. A trepan boring 911 is opened atcover plate 91 and is inserted with a hollow tube 20 out of which aheave 201 is connected with the inner wall of cover plate 91. And theouter edge of base frame 11 of syringe needle 1 has screw thread 112,protuberance 10 of outer edge bushing 9 has screw thread 92, which willscrew with base frame 11. In addition, without protuberance 10 set atall bushings, two slide ways 20 are set between the out sides of centralbushing 8 and of inner edge bushing 7, and the location and number ofheaves 30 that are set between the inner edges of outer edge bushing 9and of central bushing 8 are corresponding to that of slide ways.

[0046] Please see FIG. 20 and FIG. 21, in the present invention, theneedle structure of the syringe may integrate with the needle cylinder50 or the humoral bag. Some fasteners 501 are set at the outer fringe ofthe needle cylinder near to the front end. A sliding part 113 isextended from the back of base 3 of needle head 1, and a

type runner 114 in the sliding part 113 are installed to contain thefasteners 501 with their locations and number corresponding to thefasteners 501. At each of the two ends of the

type runner 114 there is a truct-admitting part 115 in which each of thetwo sides protrudes a fastening part 1151. The needle cylinder 50 makesthe fastener 501 contained in every

type runner 114, then the syringe needle will slip out of the fringe ofthe needle cylinder 50. When the syringe needle slips to the front orthe back of the needle cylinder 50, by turning the syringe needle, thefastener 501 of the needle cylinder 50 is fastened into thetruct-admitting part 115 at the front and back ends of the

type runner 114. With the fastening part 1151 in the truct-admittingpart 115, the fastener 501 is fixed in the truct-admitting part 115, andthe needle head of the syringe is fixed at the front or back end of theneedle cylinder 50. Moreover, some n type runners 502 may set at theouter fringe of the needle cylinder 50. At each of the two sides of the

type runner 502, there is a truct-admitting part, which protrudes twofastening part respectively at its two inner side. In the sliding part113 of the syringe needle near to the back end, some fasteners 116 isset which the locations and number are corresponding to that of the

type runner 502 of needle cylinder 50. With integration of the fastener116 of the syringe needle and the

type runner 502 of the needle cylinder 50, the needle of the syringeslips out of the fringe of the needle cylinder 50.

[0047] Compared with the above quotative cases and other typicaltechnologies, the syringe needle in the invention has followingbenefits:

[0048] 1. By the outer edge of syringe needle, an external bushingconnects with a base, and the backside of base connects with barrierstructure, which closely contacts with the head of syringe needle, sothe head of syringe needle will be used with the combination of thecover.

[0049] 2. With the combination of the head and the cover of syringeneedle, it will prevent the risks resulted in the exposure of syringeneedle for the losing of cover when rejecting and withdrawing.

[0050] 3. In this invention, it combines the head of syringe needle withcover to prevent the risks during the operation by the medical carepersonnel.

[0051] Many changes and modifications in the above described embodimentof the invention will, of course, be carried out without departing fromthe scope thereof. Accordingly, to promote the progress in science andthe useful arts, the invention is disclosed and is intended to belimited only by the scope of the appended claims.

What is claimed is:
 1. A type of syringe needle, including: A needlehead, the needle head is attached to an extended cannula on base frame;at the front end of the bushing there is truct part on which an needleis inserted; otherwise, one end of truct-setting part in the needleconnects with the inner conduit of syringe needle, the other end aftergoing through the back end of the base frame connects to the needlecylinder or to the humoral bag; An external bushing, the externalbushing is made of soft material, and is placed between the needle andthe base; A base, a truct-admitting part running through the back of thebase is produced in the base; a trepan boring on the front end of thebase is connected with the truct-admitting part; a hole running throughthe base and the trepan boring is at a reasonable place of one side ofthe base, the hole has a baffle, where there is an opening. In addition,there is a connecting part at the backside of the base; A barrierstructure, it is located between the needle and the base, covering theexternal bushing, at the front end of the barrier structure, there is aconnecting part, which connects the base and the connecting sets, andthe back end of the barrier structure contacts with the base of theneedle.
 2. The syringe needle according to claim 1, wherein a springalso is placed between the inner edge and outer edge of externalbushing.
 3. The syringe needle according to claim 1, wherein theexternal bushing is made of plastic, rubber or other soft material. 4.The syringe needle according to claim 1, wherein the side of the basehas no hole, but an elastic cell at the front end of the base willconnect a lid to cover the trepan boring of the base, which is asubstitution for a baffle.
 5. The syringe needle according to claim 1,wherein an elastic cell connects the barrier structure with the base. 6.The syringe needle according to claim 1, wherein the base has no hole,and the baffle connects the front end of the base at a hinge point. 7.The syringe needle according to claim 1, wherein several snap fastenersare set at outer edge of the base, the number and location of holes onthe truct-admitting part of the base is corresponding to the snapfasteners.
 8. The syringe needle according to claim 1, wherein theneedle integrates with the needle cylinder or the humoral bag.
 9. Thesyringe needle according to claim 1, wherein some fasteners are set atthe outer fringe of the needle cylinder near to the front end; wherein asliding part is extended from the back of the syringe base, and some

type runners with their locations and number corresponding to that ofsaid fasteners are set at the inner side of the sliding part to containsaid fasteners, and at each of the two ends there is a truct-admittingpart, wherein fastening part is protruded from each of the two sides.10. The syringe needle according to claim 1, wherein the outer fringe ofthe needle cylinder has some

type runners having a truct-admitting part respectively on its ends;wherein a fastening part protrudes from each of the two inner sides ofsaid truct-admitting part, and some fasteners are located at the slidingpart of the syringe needle near to the back end, corresponding to thelocations and number of the

type runners of the needle cylinder.
 11. The syringe needle according toclaim 1, wherein an inner edge bushing, one or more central bushing andan outer edge bushing will replace the external bushing and the base;the central bushing is cover outside of the inner edge bushing, and theouter edge bushing is cover outside of the central bushing; the back ofinner edge bushing is connected with the base frame, and at the frontouter edge there is a protuberance; but there is a protuberance at bothfront outer edge and back inner edge of the central bushing; inaddition, outer edge bushing has a protuberance at back inner edge and acover plate at the front end; a trepan boring is opened at the coverplate and is inserted with a hollow tube out of which a heave isconnected with the inner wall of cover plate, and the outer edge of thebase frame has screw thread; the protuberance of outer edge bushing hasscrew thread, which screws with the base frame.
 12. The syringe needleaccording to claim 1, wherein protuberance may not set on all bushings,however two slide ways are set between the out sides of the centralbushing and the inner edge bushing, and the location and the number ofheaves that are set between the inner edges of outer edge bushing andcentral bushing are corresponding to that of slide ways.